<template>
  <div>
    <!-- 面包屑首部导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 增删改查卡片 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="6">
          <el-input placeholder="根据用户名查找信息" v-model="queryInfo.query">
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="3">
          <el-button type="primary" @click="AddDialogVisible = true">
            添加用户
          </el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="索引"></el-table-column>
        <el-table-column
          prop="username"
          label="用户名"
          width="180"
        ></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column prop="myState" label="状态">
          <template slot-scope="scope">
            <!-- scope.row 拿到的是这一行的所有数据 -->
            <!-- {{ scope.row }} -->
            <!-- 用户状态改变 -->
            <el-switch
              v-model="scope.row.myState"
              @change="userStateChanged(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配按钮 -->
            <el-tooltip
              class="item"
              effect="dark"
              content="角色分配"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 8, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="AddDialogVisible"
      width="50%"
      @close="AddDialogClose"
    >
      <!-- 对话框主体区域 -->
      <!-- <span>这是一段信息</span> -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 添加用户对话框底部区域的确定和取消 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="AddDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框信息，校验规则和增加用户信息校验规则一样 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="addFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>

        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo()">
          确 定
        </el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->

    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo()">
          确 定
        </el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 自定义校验规则
    // 验证邮箱
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/
      if (regEmail.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法邮箱'))
    }
    // 验证手机号
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^(13[0-9]|14[0-9]|15[0-9]|16[0-9]|17[0-9]|18[0-9]|19[0-9])\d{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法手机号'))
    }
    return {
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 2,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      // 总共有多少条数据
      total: 0,
      // 添加用户对话框的显示与隐藏
      AddDialogVisible: false,
      // 修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 编辑用户的表单
      editForm: {},
      // 添加表单验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 20, message: '长度在 6 到 20 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          // 正则表达式验证邮箱是否正确在这里调用
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList() {
      // console.log('调用了getUserlist')
      const { data: res } = await this.$axios.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      // console.log('输出', res.data.users)
      // console.log(res)
      // console.log(res.data)
      this.userList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听pagesize改变的事件
    // 每页显示多少条数据
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      // console.log(newSize)
      this.getUserList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
      // console.log(newPage)
    },
    // 监听switch开关状态的改变
    async userStateChanged(userinfo) {
      // console.log(userinfo)
      const { data: res } = await this.$axios.put(
        `users/${userinfo.id}/state/${userinfo.myState}`
      )
      if (res.meta.status !== 200) {
        userinfo.myState = !userinfo.myState
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 添加用户时，点击取消等重置表单信息·
    AddDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加用户之前的预验证
    // 同登陆时候的预校验
    // validate对表单进行校验
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        // console.log(valid)
        if (!valid) {
          return false
        }
        const { data: res } = await this.$axios.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 隐藏添加用户对话框
        this.AddDialogVisible = false
        // 重新获取用户列表
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框,异步传输
    async showEditDialog(id) {
      // console.log(id)
      this.editDialogVisible = true
      const { data: res } = await this.$axios.get('users/' + id)
      // console.log('res', res)
      if (res.meta.status !== 200) {
        return this.$message.error('修改用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 点击对话框外区域，对话框消失不见
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 向后端提交修改的用户信息
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$axios.put(
          'users/' + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        this.getUserList()
        this.editDialogVisible = false
        this.$message.success('更新用户信息成功')
      })
    },
    // 删除用户的操作,根据用户id来删除
    async removeUserById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '警告',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((error) => {
        return error
      })
      // 可以简写成
      // .catch(error => error)
      // console.log(confirmResult)
      // 如果点击确认删除，confirmResult的值就是字符串confirm
      if (confirmResult !== 'confirm') {
        return this.$message.success('已经取消删除')
      }
      const { data: res } = await this.$axios.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户信息失败')
      }
      this.$message.success('删除用户信息成功')
      this.getUserList()
    },
    // 展示分配角色对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$axios.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }

      const { data: res } = await this.$axios.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style></style>
